<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org">

<head>
    <meta charset="UTF-8">
    <title>Login</title>
</head>
<body>
<h2>welcome to login</h2>
<form action="/loginUser" method="post">
    <input type="text" name="username"/><br/>
    <input type="text" name="password"/><br/>
    <input type="submit" value="登录"/>
</form>
</body>
</html>